What I am looking for is to be able to make a comment in our customer's card such as an update on the project and have that comment get automatically emailed out to the customer email so they being updated constantly as the project moves along and the notes are made in Trello, but we don't want all the notes sent out. Is there a way to add a trigger such as adding (@ customer) to the end of the comments and only those get emailed to the customer. We could even add a custom field with just the customer's email so it can chose that email specifically and sent it out?